Radian 2215B

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.8dB
• Frequency response 40 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 40Hz
• Mechanical quality factor QMS 3.80
• Electrical quality factor QES 0.32
• Total quality factor QTS 0.30

Large signal parameters

• Maximum linear excursion xmax 6mm
• Air volume displaced at xmax VD 529cm³
• Power handling P 800W
• Program power Pmax 1600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.6Ω
• Inductance (1kHz) LE 1.26mH
• VC Diameter 101.6mm
• Winding height HVC 17mm
• Winding material Copper clad Aluminum
• Former material Fiberglass

Magnet

• Force factor Bl 19.7N/A
• Motor constant Bl/√RE 8.32N/√W
• Air gap height HAG 10mm
• Material Ferrite

Diaphragm

• Effective diameter 335mm
• Effective area SD 881cm²
• Moving mass MMS 88g
• Moving mass (without air load) MMD 70.1g
• Material Paper/Kevlar composite

Suspensions

• Stiffness KMS 5.56N/mm
• Compliance CMS 180µm/N
• Equivalent volume to the compliance VAS 200L
• Mechanical resistance RMS 5.82N·s/m

Dimensions

• Nominal diameter 15″
• 380mm
• Overall diameter 387mm
• Baffle cutout diameter 356mm
• Overall depth 134mm
• Volume occupied by the driver (estimated) 4L
• Net weight 9.9kg
• Frame material Cast Aluminum